I've looked into the Access file behind the software, and I found that all inventory changes are found in the table InvChange. This is a quite interesting information. Each change carry in identity, "changetype", and I've identified the following:

I realised that "6" has meddled with our stock count, could be myself I would love to be able to disable te functions we don't need. Less functions, less errors. That's just a suggestion for coming versions.